    * {
        margin: 0 auto;
        padding: 0;
        list-style: none;
        text-decoration: none;
    }
    
    #da {
        width: 100%;
        height: 100%;
    }
    
    #header {
        width: 100%;
        height: 155px;
    }
    
    #nav {
        width: 100%;
        height: 155px;
        margin: 0 auto;
        background-color: #333333;
    }
    
    #h1 {
        width: 1881px;
        height: 118px;
        background: url(%E5%9B%BE%E7%89%87/z1.png);
    }
    
    #h2 {
        width: 1881px;
        height: 37px;
        background: url(%E5%9B%BE%E7%89%87/z2.png);
    }
    
    #h2 {
        margin-left: 0px;
    }
    
    #h2 ul {
        list-style-type: none;
        margin: 0;
        padding: 0;
        overflow: hidden;
        margin-left: 300px;
    }
    /* 为每个链接设定样式 */
    
    .dropbtn {
        display: inline-block;
        color: white;
        text-align: center;
        padding: 8px 10px;
        text-decoration: none;
    }
    /* 鼠标放置链接时改变样式 */
    
    .dropbtn:hover {
        background-color: #e66b1a;
        color: white;
    }
    
    .dropdown {
        display: inline-block;
        height: 37px;
    }
    /* 下拉菜单设置样式 */
    
    .dropdown-content {
        /* 隐藏菜单 */
        display: none;
        position: absolute;
        background-color: #e66b1a;
        /* 设置链接元素的最小宽度 */
        min-width: 160px;
        box-shadow: 0px 8px 16px 0px rgba(12, 12, 12, 0.2);
        overflow: auto;
    }
    
    .dropdown-content a {
        display: block;
        color: white;
        padding: 12px 16px;
        text-decoration: none;
    }
    
    .dropdown-content a:hover {
        background-color: burlywood;
    }
    
    .dropdown:hover .dropdown-content {
        display: block;
    }
    
    #bottom {
        width: 100%;
        height: 142px;
        background: url(%E5%9B%BE%E7%89%87/z10.png);
    }
    
    #foot {
        width: 1000px;
        height: 142px;
        background: url(%E5%9B%BE%E7%89%87/z11.png);
    }
    
    #b1 {
        width: 500px;
        height: 29px;
        margin-left: 25px;
        margin-top: 10px;
        float: left;
    }
    
    #b1 li {
        float: left;
        font-size: 12px;
        margin-left: 2px;
        margin-top: 5px;
    }
    
    #b1 a {
        color: #FFF;
    }
    
    #b2 {
        width: 400px;
        height: 35px;
        margin-right: 60px;
        margin-top: 15px;
        float: right
    }
    
    #b2x1 {
        width: 120px;
        height: 35px;
        float: left
    }
    
    #b2x1 a {
        font-size: 14px;
        color: #999;
        ;
    }
    
    #b2x2 {
        background: blue;
        width: 80px;
        height: 42px;
        color: white;
        border-radius: 0px;
        border: none;
        outline: none;
        font-size: 16px;
    }
    
    #b3 {
        width: 329px;
        height: 54px;
        margin-top: 30px;
        margin-left: 370px;
        float: left;
    }
    
    #b3x1 {
        font-size: 11px;
        color: #999;
    }
    
    #b3x2 {
        font-size: 11px;
        color: #999;
        margin-left: 50px;
    }
    
    #listBox {
        width: 900px;
        background: #fff;
        clear: both;
        overflow: hidden;
        margin: auto;
        padding: 0px 10px;
    }
    
    #h3 {
        background: #a0cdec url(%E5%9B%BE%E7%89%87/ximen.jpg);
        width: inherit;
        height: 286px;
    }
    
    .wrap {
        z-index: 1000;
        width: 955px;
        margin: 0 auto;
        margin-top: -80px;
        margin-bottom: 40px;
    }
    
    #d2x2 {
        width: 1100px;
        margin-top: 300px;
        background: #FFF;
        margin-right: 200px;
    }